“Wide Angle” at 9 p.m. Tuesday follows aid workers from the Syrian-Iraqi Red Crescent as they help refugees cope with the crisis.

Chilean judge Juan Guzman uncovers the past during the case against ex-dictator Augusto Pinochet in “P.O.V.” at 10 p.m. Tuesday.

“Nova ScienceNow” at 7 p.m. Wednesday explores whether a doomsday asteroid will hit the earth in 2036 and what the consequences could be.

“Nova ScienceNow” at 8 p.m. Wednesday takes a look at startling new research that has recovered ancient proteins from dinosaur bones.

Ladysmith Black Mambazo showcases their combination of South African musical traditions and Christian gospel in “Austin City Limits” at 10 p.m. Wednesday and 11 p.m. Friday.

“Texas Monthly Talks” at 7 p.m. Thursday presents an encore of an interview with John Edwards conducted in 2007.

“Docubloggers” at 7:30 p.m. Thursday looks at how quilting is becoming the fastest growing craft in the nation and follows Docublogger Mark Mederson as he documents the Central U.S. Knife Throwing Championship.

“Downtown” at 8:30 p.m. Thursday takes a closer look at various dancing options downtown as well as street art as a creative outlet for the homeless.